thank you, steve. >> by the way, antoinette told me last night that her pastor showed her how to stay calm and pray on the inside in the midst of chaos, and so she did. and now we head overseas because there are new images posing a challenge to america's leadership around the world. did the syrian government use chemical weapons against its own people, women and children? is there new evidence? we warn you the images can be disturbing, as abc's chief global affairs correspondent, martha raddatz, tonight searches for the truth. >> reporter: the pictures are gut wrenching, the rebels fighting the regime say these are mothers, fathers, children killed while they slept in their homes in a damascus suburb. they say the syrian regime fired rockets on its own people, rockets carrying poisonous gas, leaving the innocent convulsing, foaming at the mouth, suffocating. >> i would be surprised if it turned out to be a fake.